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<?php $base64 = 'iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+'; echo 'plain: ', substr($string = base64_decode($base64), 0, 16), "\n"; echo bin2hex(substr($string, 0, 16)), "\n"; $uri = 'image/png;base64,' . $base64; $string = file_get_contents('data:' . $uri); echo 'no slashes: '; echo substr($string, 0, 16), "\n"; echo bin2hex(substr($string, 0, 16)), "\n"; echo 'with slashes: '; $string = file_get_contents('data://' . $uri); echo substr($string, 0, 16), "\n"; echo bin2hex(substr($string, 0, 16)), "\n";
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Fk4RY
function name:  (null)
number of ops:  72
compiled vars:  !0 = $base64, !1 = $string, !2 = $uri
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs%2B'
    5     1        ECHO                                                     'plain%3A+'
          2        INIT_FCALL                                               'substr'
          3        INIT_FCALL                                               'base64_decode'
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $4      
          6        ASSIGN                                           ~5      !1, $4
          7        SEND_VAL                                                 ~5
          8        SEND_VAL                                                 0
          9        SEND_VAL                                                 16
         10        DO_ICALL                                         $6      
         11        ECHO                                                     $6
         12        ECHO                                                     '%0A'
    6    13        INIT_FCALL                                               'bin2hex'
         14        INIT_FCALL                                               'substr'
         15        SEND_VAR                                                 !1
         16        SEND_VAL                                                 0
         17        SEND_VAL                                                 16
         18        DO_ICALL                                         $7      
         19        SEND_VAR                                                 $7
         20        DO_ICALL                                         $8      
         21        ECHO                                                     $8
         22        ECHO                                                     '%0A'
    8    23        CONCAT                                           ~9      'image%2Fpng%3Bbase64%2C', !0
         24        ASSIGN                                                   !2, ~9
   10    25        INIT_FCALL                                               'file_get_contents'
         26        CONCAT                                           ~11     'data%3A', !2
         27        SEND_VAL                                                 ~11
         28        DO_ICALL                                         $12     
         29        ASSIGN                                                   !1, $12
   11    30        ECHO                                                     'no+slashes%3A+'
   12    31        INIT_FCALL                                               'substr'
         32        SEND_VAR                                                 !1
         33        SEND_VAL                                                 0
         34        SEND_VAL                                                 16
         35        DO_ICALL                                         $14     
         36        ECHO                                                     $14
         37        ECHO                                                     '%0A'
   13    38        INIT_FCALL                                               'bin2hex'
         39        INIT_FCALL                                               'substr'
         40        SEND_VAR                                                 !1
         41        SEND_VAL                                                 0
         42        SEND_VAL                                                 16
         43        DO_ICALL                                         $15     
         44        SEND_VAR                                                 $15
         45        DO_ICALL                                         $16     
         46        ECHO                                                     $16
         47        ECHO                                                     '%0A'
   15    48        ECHO                                                     'with+slashes%3A+'
   16    49        INIT_FCALL                                               'file_get_contents'
         50        CONCAT                                           ~17     'data%3A%2F%2F', !2
         51        SEND_VAL                                                 ~17
         52        DO_ICALL                                         $18     
         53        ASSIGN                                                   !1, $18
   17    54        INIT_FCALL                                               'substr'
         55        SEND_VAR                                                 !1
         56        SEND_VAL                                                 0
         57        SEND_VAL                                                 16
         58        DO_ICALL                                         $20     
         59        ECHO                                                     $20
         60        ECHO                                                     '%0A'
   18    61        INIT_FCALL                                               'bin2hex'
         62        INIT_FCALL                                               'substr'
         63        SEND_VAR                                                 !1
         64        SEND_VAL                                                 0
         65        SEND_VAL                                                 16
         66        DO_ICALL                                         $21     
         67        SEND_VAR                                                 $21
         68        DO_ICALL                                         $22     
         69        ECHO                                                     $22
         70        ECHO                                                     '%0A'
         71      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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